Efficient synthesis of silver nanoparticles from Prosopis juliflora leaf extract and its antimicrobial activity using sewage

Raja, K.; Saravanakumar, A.; Vijayakumar, R.

doi:10.1016/j.saa.2012.06.038

Cited by 104 publications

(39 citation statements)

References 24 publications

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“…59 Another hypothesis suggests that the NPs will be oxidized, dissolve, and generate reactive oxygen species, which will, in turn, enter the cytoplasm, causing bacterial death. [60][61][62] Moreover, small-sized nanoparticles may accumulate intracellularly and lead to cell malfunction.…”

mentioning

confidence: 99%

Facile method for the synthesis of silver nanoparticles using 3-hydrazino-isatin derivatives in aqueous methanol and their antibacterial activity

El‐Faham¹,

Elzatahry²,

ALOthman³

et al. 2014

IJN

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Introduction A new method for preparation of silver nanoparticles (AgNPs) based on using hydrazino-isatin derivatives in an aqueous methanol reaction medium is reported here. AgNPs were prepared using silver nitrate solubilized in a water core as the source of silver ions and 3-hydrazino-isatin derivatives (3-hydrazino-isatin [IsH] and 1-benzyl-3-hydrazino-isatin [BIsH]) solubilized in methanol core as a reducing agent. The proposed method is effective, rapid, and convenient. X-ray diffraction (XRD), energy dispersive X-ray analysis, scanning electron microscope (SEM) and transmission electron microscopy (TEM) were used for characterization of the AgNPs. The TEM micrographs confirmed that the nanopowders consist of well-dispersed agglomerates of grains with a narrow size distribution of 18–21 nm and 17–20 nm. The AgNPs, as well as BIsH, showed high antimicrobial and bactericidal activity against the Gram-positive Bacillus subtilis and Gram-negative Micrococcus luteus and Proteus vulgaris , as well as antifungal activities against Saccharomyces cerevisiae . On the other hand, they were not effective against the Gram-negative Escherichia coli . Purpose A simple, effective, rapid, and convenient chemical reduction method for the synthesis of AgNPs in an aqueous methanol reaction medium using hydrazino-isatin derivatives and studying their antibacterial effect. Results IsH and BIsH are remarkably powerful reductants for Ag+ ions in an aqueous methanol medium, which could be considered as a simple chemical reduction method for formation of AgNPs. The AgNP formation depends on the solubility of the hydrazino-isatin derivatives. BIsH gave more AgNPs than IsH, as observed from XRD. The formation of AgNPs is attributed to the adsorption of hydrazine derivatives and/or interparticle interaction on the surface of AgNP through electrostatic interactions between the lone pair electrons of the hydrazino group (C=N-NH 2 ) and the positive surface of AgNPs. AgNPs and BIsH showed high antimicrobial and bacterial activity. Conclusion In summary, it is shown that IsH and BIsH are remarkably powerful reductants for Ag+ ions in an aqueous methanol medium. BIsH gave more AgNPs than IsH, as observed from XRD due to better solubility of the BIsH than IsH in aqueous-methanol. The formation of AgNPs is attributed to the adsorption of hydrazine derivatives and/or interparticle interaction on the surface of AgNPs through electrostatic interactions between the lone pair electrons of the hydrazino group (C=N-NH 2 ) and the positive surface of AgNPs. The AgNps as well as BIsH ligand showed high antimicrobial and bactericidal activity.

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mentioning

confidence: 99%

Facile method for the synthesis of silver nanoparticles using 3-hydrazino-isatin derivatives in aqueous methanol and their antibacterial activity

El‐Faham¹,

Elzatahry²,

ALOthman³

et al. 2014

IJN

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“…The carboxylic group and hydroxyl group are also responsible for reduction of silver ion into silver nanoparticles. It was proved by Raja et al, Kumar et al and Jayaseelan et al [51][52][53]. Shankar et al suggested that the presence of flavonanes or terpenoids adsorbed on the surface of the synthesized metal nanoparticles and the reaction of metal ions which was possibly facilitated by the reducing sugars and/or terpenoids present in the neem leaf broth [54].…”

Section: Fourier Transform Infrared Spectroscopy (Ftir)mentioning

confidence: 97%

Green Synthesis and Characterization of Silver Nanoparticles Using Vitex negundo (Karu Nochchi) Leaf Extract and its Antibacterial Activity

alakshmi¹,

Venugobal²

2017

Med chem

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The present paper focuses on the synthesis of silver nanoparticles using with different leaf extract concentrations of Vitex negundo. The biosynthesized nanoparticles were characterized by UV-vis absorption spectrophotometry, fourier transform infrared spectroscopy, X-ray diffraction, field emission scanning electron microscopy, energy dispersive X-ray, atomic force microscopy, transmission electron microscopy, photoluminescence and zeta potential techniques. The formation of silver nanoparticles was confirmed by the surface plasmon resonance absorption peak at 423 nm in UV-vis absorption spectra of the synthesized silver nanoparticles. The fourier transform infrared spectroscopy indicates flavonoids as a potential reduced agents. Field emission scanning electron microscopy shows the synthesized silver nanoparticles are in spherical shape. Energy dispersive X-ray spectroscopy shows the strong peak belongs to silver, and it confirms the formation of Ag NPs. X-ray diffraction spectra of synthesized silver nanoparticles exhibit they are in face centered cubic crystalline structure. The photoluminescence spectra of synthesized silver nanoparticles show their emission peak at 489-481 nm and the emission intensity is proportional to the different concentrations of leaf extract. The spherical shaped silver nanoparticles are observed by atomic force microscopy technique. The zeta potential value is observed at -13.5 mV, which shows the synthesized silver nanoparticles are incipient instability. The antimicrobial activity of the synthesized nanoparticles is studied using the disc diffusion method, which indicates that both Gram positive and Gram negative microorganisms have been affected by the silver nanoparticles. The observed antibacterial activity could be find important applications in medicine, biology and industry.

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“…The leaf extract of several plants were used for the synthesis of AGNPs including Gloriosa superba L. (Ashokkumar et al, 2013), Prosopis juliflora (Raja et al, 2012), Rosadamascene (Ghoreishi et al, 2011, Sesbania grandiflora (Das et al, 2013, Rosa rugosa (Dubey et al, 2010), Hibiscus cannabinus (Bindhu et al, 2013), Barbated Skullcup herb (Wang et al, 2009), Anacardium occidentale (Philip and Unni, 2011).…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of silver nanoparticles using Morus nigra leave extract and evaluation their antifungal potency on phytopathogenic fungi

2017

J App Pharma Sci

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This study aimed to isolate and identify the fungi associated with white and yellow corn grain and peanuts seeds samples collected from different distracts at Cairo, to use Morus nigra leaves extract for the green synthesis of silver nanoparticles (AgNPs) and to evaluate the antifungal potency and anti-aflatoxin production of the synthesized AgNPs. White and yellow corn and peanut seeds samples were collected from 4 different districts of Cairo, mycoflora were isolated on Potato dextrose agar (PDA), Nash and Coon's media. The results revealed the isolation of sixteen fungal species belonging to 7 genera were recovered and identified during this study. The produced AgNPs showed Uv/Vis absorbance at 425 nm and particles sizes ranged from 4 to 8 nm. Both AgNPs and the plant extract showed a strong antifungal activity against P. carryophylum; F. verticillioides; A. flavus; A. terreus and F. oxysporum using different techniques. Moreover, AgNPs was more effective than the plant extract against the tested fungi and anti-aflatoxin production by A. parasiticus. It could be concluded that the Morus nigra leaves extract can be used for the syntheses of AgNPs and also as antifungal of plant disease. Thus, Morus nigra and AgNPs could be used as effective, safe and ecofriendly antifungals to prevent fungal growth and subsequent aflatoxins production.

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Efficient synthesis of silver nanoparticles from Prosopis juliflora leaf extract and its antimicrobial activity using sewage

Cited by 104 publications

References 24 publications

Facile method for the synthesis of silver nanoparticles using 3-hydrazino-isatin derivatives in aqueous methanol and their antibacterial activity

Facile method for the synthesis of silver nanoparticles using 3-hydrazino-isatin derivatives in aqueous methanol and their antibacterial activity

Green Synthesis and Characterization of Silver Nanoparticles Using Vitex negundo (Karu Nochchi) Leaf Extract and its Antibacterial Activity

Green synthesis of silver nanoparticles using Morus nigra leave extract and evaluation their antifungal potency on phytopathogenic fungi

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